Information about test data files:

1. input.txt is generated from test a
2. test.txt and validate.txt are generated from test b
3. test-clean.txt and validate-clean.txt are generated from test c
4. def-model.RDS is generated from tests a and h
5. n1.RDS, n2.RDS, n3.RDS and n4.RDS are generated from test e
